// Copyright (C) Kumo inc. and its affiliates.
// Author: Jeff.li lijippy@163.com
// All rights reserved.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
//


#include <pollux/exec/operator_trace_scan.h>

#include <pollux/exec/trace_util.h>

namespace kumo::pollux::exec::trace {
    OperatorTraceScan::OperatorTraceScan(
        int32_t operatorId,
        DriverCtx *driverCtx,
        const std::shared_ptr<const core::TraceScanNode> &traceScanNode)
        : SourceOperator(
            driverCtx,
            traceScanNode->outputType(),
            operatorId,
            traceScanNode->id(),
            "OperatorTraceScan") {
        traceReader_ = std::make_unique<OperatorTraceInputReader>(
            getOpTraceDirectory(
                traceScanNode->traceDir(),
                traceScanNode->pipelineId(),
                traceScanNode->driverIds().at(driverCtx->driverId)),
            traceScanNode->outputType(),
            memory::MemoryManager::getInstance()->tracePool());
    }

    RowVectorPtr OperatorTraceScan::getOutput() {
        RowVectorPtr batch;
        if (traceReader_->read(batch)) {
            return batch;
        }
        finished_ = true;
        return nullptr;
    }

    bool OperatorTraceScan::isFinished() {
        return finished_;
    }
} // namespace kumo::pollux::exec::trace
